Further testing, 2026-10-10. Another HWE kernel update. After a normal reboot into the new kernel, HDMI A/V was late again (same ~2 s, HDMI only, Aux fine).
Switched back to 7.0.0-31: desync still present, same as the 2026-10-02 test. A reboot does not clear it. Full Sony power-off and HDMI unplug for 10 seconds cleared it on the new kernel as well. Same recovery as on 31 and 38. Summary: - First seen after 7.0.0-34. - Reproduced on 34, 38, and the current kernel after a normal reboot. - Once the Sony is in the bad state, it survives reboot and kernel switches (including back to 31). - Cleared on every kernel tested only by a full sink power-off and cable reseat. - 7.0.0-31 is not immune once the link is stuck; it only looked clean on 2026-09-29. This looks like an i915 HDMI bring-up change from 7.0.0-34 that leaves the sink with a sticky A/V offset. The unplug is a recovery, not evidence that the kernel is unrelated. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2169236 Title: HDMI A/V desync on Intel UHD 630 (Comet Lake) since 7.0.0-34, still present on 7.0.0-38 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2169236/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
